html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, Helvetica Neue, Helvetica,
    Segoe UI, Arial, Roboto, PingFang SC, miui, Hiragino Sans GB,
    Microsoft Yahei, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}
#app {
  width: 500px;
  height: 100%;
  box-sizing: border-box;
  padding: 1rem;
  font-size: 1.25rem;
  background-color: #f5f5f5;
  border-radius: 0.25rem;
  box-shadow: 0 0 0.25rem rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 0 auto;
}
#input-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 3rem;
  gap: 1rem;
}
#input {
  flex: 1;
  height: 3rem;
  box-sizing: border-box;
  font-size: 1.25rem;
  border: 1px solid #ccc;
  border-radius: 0.25rem;
  padding: 0.5rem;
}
#input:focus {
  outline: none;
}
#submit {
  font-size: 1.25rem;
  font-weight: 500;
  width: 5rem;
  height: 2.8rem;
  background-color: #0052d9;
  border: none;
  border-radius: 0.25rem;
  color: white;
  cursor: pointer;
}
#submit:hover {
  background-color: #366ef4;
}
#output {
  width: 100%;
  flex: 1;
  overflow-y: auto;
}
